clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Add s3_upload_checksum_algorithm setting
- Add setting to omit CSV quotes for date and time types
- Fix MarkCache entries never evicted after a part is moved or detached
- Fix flaky test 02770_async_buffer_ignore
- Make ALTER MODIFY COLUMN on named Tuple metadata-only when adding subfields
- Enable independent per-partition DISTINCT when partition key matches DISTINCT columns
- RFC: Keyed recursive CTEs (settled-set semantics for graph traversal in recursive queries)
- Primary key index is not used when the key expression `toStartOfInterval(a, toIntervalSecond(N))` is written explicitly in WHERE (constant-folded argument breaks `KeyCondition` matching)
- Add query plan cache for complex queries (views, joins, subqueries)
- AddressSanitizer: CHECK failed: sanitizer_allocator_secondary.h:199 "((nearest_chunk)) >= ((h->map_beg))"
- Docs
- C++ not yet supported